259171780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:522

約数の個数: 144

約数和(自身を含む): 689472000

約数和(自身を除く): 430300220

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 31, 35, 38, 49, 62, 70, 76, 95, 98, 124, 133, 140, 155, 190, 196, 217, 245, 266, 310, 380, 434, 449, 490, 532, 589, 620, 665, 868, 898, 931, 980, 1085, 1178, 1330, 1519, 1796, 1862, 2170, 2245, 2356, 2660, 2945, 3038, 3143, 3724, 4123, 4340, 4490, 4655, 5890, 6076, 6286, 7595, 8246, 8531, 8980, 9310, 11780, 12572, 13919, 15190, 15715, 16492, 17062, 18620, 20615, 22001, 27838, 28861, 30380, 31430, 34124, 41230, 42655, 44002, 55676, 57722, 59717, 62860, 69595, 82460, 85310, 88004, 97433, 110005, 115444, 119434, 139190, 144305, 170620, 194866, 220010, 238868, 264461, 278380, 288610, 298585, 389732, 418019, 440020, 487165, 528922, 577220, 597170, 682031, 836038, 974330, 1057844, 1194340, 1322305, 1364062, 1672076, 1851227, 1948660, 2090095, 2644610, 2728124, 3410155, 3702454, 4180190, 5289220, 6820310, 7404908, 8360380, 9256135, 12958589, 13640620, 18512270, 25917178, 37024540, 51834356, 64792945, 129585890, 259171780]

約数ペア:

[(1, 259171780), (2, 129585890), (4, 64792945), (5, 51834356), (7, 37024540), (10, 25917178), (14, 18512270), (19, 13640620), (20, 12958589), (28, 9256135), (31, 8360380), (35, 7404908), (38, 6820310), (49, 5289220), (62, 4180190), (70, 3702454), (76, 3410155), (95, 2728124), (98, 2644610), (124, 2090095), (133, 1948660), (140, 1851227), (155, 1672076), (190, 1364062), (196, 1322305), (217, 1194340), (245, 1057844), (266, 974330), (310, 836038), (380, 682031), (434, 597170), (449, 577220), (490, 528922), (532, 487165), (589, 440020), (620, 418019), (665, 389732), (868, 298585), (898, 288610), (931, 278380), (980, 264461), (1085, 238868), (1178, 220010), (1330, 194866), (1519, 170620), (1796, 144305), (1862, 139190), (2170, 119434), (2245, 115444), (2356, 110005), (2660, 97433), (2945, 88004), (3038, 85310), (3143, 82460), (3724, 69595), (4123, 62860), (4340, 59717), (4490, 57722), (4655, 55676), (5890, 44002), (6076, 42655), (6286, 41230), (7595, 34124), (8246, 31430), (8531, 30380), (8980, 28861), (9310, 27838), (11780, 22001), (12572, 20615), (13919, 18620), (15190, 17062), (15715, 16492)]