81985220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 191237760

約数和(自身を除く): 109252540

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 61, 67, 68, 85, 118, 122, 134, 170, 236, 244, 268, 295, 305, 335, 340, 590, 610, 670, 1003, 1037, 1139, 1180, 1220, 1340, 2006, 2074, 2278, 3599, 3953, 4012, 4087, 4148, 4556, 5015, 5185, 5695, 7198, 7906, 8174, 10030, 10370, 11390, 14396, 15812, 16348, 17995, 19765, 20060, 20435, 20740, 22780, 35990, 39530, 40870, 61183, 67201, 69479, 71980, 79060, 81740, 122366, 134402, 138958, 241133, 244732, 268804, 277916, 305915, 336005, 347395, 482266, 611830, 672010, 694790, 964532, 1205665, 1223660, 1344020, 1389580, 2411330, 4099261, 4822660, 8198522, 16397044, 20496305, 40992610, 81985220]

約数ペア:

[(1, 81985220), (2, 40992610), (4, 20496305), (5, 16397044), (10, 8198522), (17, 4822660), (20, 4099261), (34, 2411330), (59, 1389580), (61, 1344020), (67, 1223660), (68, 1205665), (85, 964532), (118, 694790), (122, 672010), (134, 611830), (170, 482266), (236, 347395), (244, 336005), (268, 305915), (295, 277916), (305, 268804), (335, 244732), (340, 241133), (590, 138958), (610, 134402), (670, 122366), (1003, 81740), (1037, 79060), (1139, 71980), (1180, 69479), (1220, 67201), (1340, 61183), (2006, 40870), (2074, 39530), (2278, 35990), (3599, 22780), (3953, 20740), (4012, 20435), (4087, 20060), (4148, 19765), (4556, 17995), (5015, 16348), (5185, 15812), (5695, 14396), (7198, 11390), (7906, 10370), (8174, 10030)]