18180260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 46448640

約数和(自身を除く): 28268380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 59, 62, 70, 71, 118, 124, 140, 142, 155, 217, 236, 284, 295, 310, 355, 413, 434, 497, 590, 620, 710, 826, 868, 994, 1085, 1180, 1420, 1652, 1829, 1988, 2065, 2170, 2201, 2485, 3658, 4130, 4189, 4340, 4402, 4970, 7316, 8260, 8378, 8804, 9145, 9940, 11005, 12803, 15407, 16756, 18290, 20945, 22010, 25606, 29323, 30814, 36580, 41890, 44020, 51212, 58646, 61628, 64015, 77035, 83780, 117292, 128030, 129859, 146615, 154070, 256060, 259718, 293230, 308140, 519436, 586460, 649295, 909013, 1298590, 1818026, 2597180, 3636052, 4545065, 9090130, 18180260]

約数ペア:

[(1, 18180260), (2, 9090130), (4, 4545065), (5, 3636052), (7, 2597180), (10, 1818026), (14, 1298590), (20, 909013), (28, 649295), (31, 586460), (35, 519436), (59, 308140), (62, 293230), (70, 259718), (71, 256060), (118, 154070), (124, 146615), (140, 129859), (142, 128030), (155, 117292), (217, 83780), (236, 77035), (284, 64015), (295, 61628), (310, 58646), (355, 51212), (413, 44020), (434, 41890), (497, 36580), (590, 30814), (620, 29323), (710, 25606), (826, 22010), (868, 20945), (994, 18290), (1085, 16756), (1180, 15407), (1420, 12803), (1652, 11005), (1829, 9940), (1988, 9145), (2065, 8804), (2170, 8378), (2201, 8260), (2485, 7316), (3658, 4970), (4130, 4402), (4189, 4340)]