20123469940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{2999}}^1$

素因数の和:3230

約数の個数: 144

約数和(自身を含む): 50676192000

約数和(自身を除く): 30552722060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 167, 196, 205, 245, 287, 334, 410, 490, 574, 668, 820, 835, 980, 1148, 1169, 1435, 1670, 2009, 2338, 2870, 2999, 3340, 4018, 4676, 5740, 5845, 5998, 6847, 8036, 8183, 10045, 11690, 11996, 13694, 14995, 16366, 20090, 20993, 23380, 27388, 29990, 32732, 34235, 40180, 40915, 41986, 47929, 59980, 68470, 81830, 83972, 95858, 104965, 122959, 136940, 146951, 163660, 191716, 209930, 239645, 245918, 293902, 335503, 419860, 479290, 491836, 500833, 587804, 614795, 671006, 734755, 860713, 958580, 1001666, 1229590, 1342012, 1469510, 1677515, 1721426, 2003332, 2459180, 2504165, 2939020, 3355030, 3442852, 3505831, 4303565, 5008330, 6024991, 6710060, 7011662, 8607130, 10016660, 12049982, 14023324, 17214260, 17529155, 20534153, 24099964, 24540817, 30124955, 35058310, 41068306, 49081634, 60249910, 70116620, 82136612, 98163268, 102670765, 120499820, 122704085, 143739071, 205341530, 245408170, 287478142, 410683060, 490816340, 574956284, 718695355, 1006173497, 1437390710, 2012346994, 2874781420, 4024693988, 5030867485, 10061734970, 20123469940]

約数ペア:

[(1, 20123469940), (2, 10061734970), (4, 5030867485), (5, 4024693988), (7, 2874781420), (10, 2012346994), (14, 1437390710), (20, 1006173497), (28, 718695355), (35, 574956284), (41, 490816340), (49, 410683060), (70, 287478142), (82, 245408170), (98, 205341530), (140, 143739071), (164, 122704085), (167, 120499820), (196, 102670765), (205, 98163268), (245, 82136612), (287, 70116620), (334, 60249910), (410, 49081634), (490, 41068306), (574, 35058310), (668, 30124955), (820, 24540817), (835, 24099964), (980, 20534153), (1148, 17529155), (1169, 17214260), (1435, 14023324), (1670, 12049982), (2009, 10016660), (2338, 8607130), (2870, 7011662), (2999, 6710060), (3340, 6024991), (4018, 5008330), (4676, 4303565), (5740, 3505831), (5845, 3442852), (5998, 3355030), (6847, 2939020), (8036, 2504165), (8183, 2459180), (10045, 2003332), (11690, 1721426), (11996, 1677515), (13694, 1469510), (14995, 1342012), (16366, 1229590), (20090, 1001666), (20993, 958580), (23380, 860713), (27388, 734755), (29990, 671006), (32732, 614795), (34235, 587804), (40180, 500833), (40915, 491836), (41986, 479290), (47929, 419860), (59980, 335503), (68470, 293902), (81830, 245918), (83972, 239645), (95858, 209930), (104965, 191716), (122959, 163660), (136940, 146951)]