20817851940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{433}}^1\times {\mathrm{5683}}^1$

素因数の和:6178

約数の個数: 144

約数和(自身を含む): 64651362048

約数和(自身を除く): 43833510108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 433, 470, 564, 705, 846, 866, 940, 1299, 1410, 1692, 1732, 2115, 2165, 2598, 2820, 3897, 4230, 4330, 5196, 5683, 6495, 7794, 8460, 8660, 11366, 12990, 15588, 17049, 19485, 20351, 22732, 25980, 28415, 34098, 38970, 40702, 51147, 56830, 61053, 68196, 77940, 81404, 85245, 101755, 102294, 113660, 122106, 170490, 183159, 203510, 204588, 244212, 255735, 267101, 305265, 340980, 366318, 407020, 511470, 534202, 610530, 732636, 801303, 915795, 1022940, 1068404, 1221060, 1335505, 1602606, 1831590, 2403909, 2460739, 2671010, 3205212, 3663180, 4006515, 4807818, 4921478, 5342020, 7382217, 8013030, 9615636, 9842956, 12019545, 12303695, 14764434, 16026060, 22146651, 24039090, 24607390, 29528868, 36911085, 44293302, 48078180, 49214780, 73822170, 88586604, 110733255, 115654733, 147644340, 221466510, 231309466, 346964199, 442933020, 462618932, 578273665, 693928398, 1040892597, 1156547330, 1387856796, 1734820995, 2081785194, 2313094660, 3469641990, 4163570388, 5204462985, 6939283980, 10408925970, 20817851940]

約数ペア:

[(1, 20817851940), (2, 10408925970), (3, 6939283980), (4, 5204462985), (5, 4163570388), (6, 3469641990), (9, 2313094660), (10, 2081785194), (12, 1734820995), (15, 1387856796), (18, 1156547330), (20, 1040892597), (30, 693928398), (36, 578273665), (45, 462618932), (47, 442933020), (60, 346964199), (90, 231309466), (94, 221466510), (141, 147644340), (180, 115654733), (188, 110733255), (235, 88586604), (282, 73822170), (423, 49214780), (433, 48078180), (470, 44293302), (564, 36911085), (705, 29528868), (846, 24607390), (866, 24039090), (940, 22146651), (1299, 16026060), (1410, 14764434), (1692, 12303695), (1732, 12019545), (2115, 9842956), (2165, 9615636), (2598, 8013030), (2820, 7382217), (3897, 5342020), (4230, 4921478), (4330, 4807818), (5196, 4006515), (5683, 3663180), (6495, 3205212), (7794, 2671010), (8460, 2460739), (8660, 2403909), (11366, 1831590), (12990, 1602606), (15588, 1335505), (17049, 1221060), (19485, 1068404), (20351, 1022940), (22732, 915795), (25980, 801303), (28415, 732636), (34098, 610530), (38970, 534202), (40702, 511470), (51147, 407020), (56830, 366318), (61053, 340980), (68196, 305265), (77940, 267101), (81404, 255735), (85245, 244212), (101755, 204588), (102294, 203510), (113660, 183159), (122106, 170490)]