72128320

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:720

約数の個数: 112

約数和(自身を含む): 193706496

約数和(自身を除く): 121578176

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 155, 160, 176, 220, 248, 310, 320, 341, 352, 440, 496, 620, 661, 682, 704, 880, 992, 1240, 1322, 1364, 1705, 1760, 1984, 2480, 2644, 2728, 3305, 3410, 3520, 4960, 5288, 5456, 6610, 6820, 7271, 9920, 10576, 10912, 13220, 13640, 14542, 20491, 21152, 21824, 26440, 27280, 29084, 36355, 40982, 42304, 52880, 54560, 58168, 72710, 81964, 102455, 105760, 109120, 116336, 145420, 163928, 204910, 211520, 225401, 232672, 290840, 327856, 409820, 450802, 465344, 581680, 655712, 819640, 901604, 1127005, 1163360, 1311424, 1639280, 1803208, 2254010, 2326720, 3278560, 3606416, 4508020, 6557120, 7212832, 9016040, 14425664, 18032080, 36064160, 72128320]

約数ペア:

[(1, 72128320), (2, 36064160), (4, 18032080), (5, 14425664), (8, 9016040), (10, 7212832), (11, 6557120), (16, 4508020), (20, 3606416), (22, 3278560), (31, 2326720), (32, 2254010), (40, 1803208), (44, 1639280), (55, 1311424), (62, 1163360), (64, 1127005), (80, 901604), (88, 819640), (110, 655712), (124, 581680), (155, 465344), (160, 450802), (176, 409820), (220, 327856), (248, 290840), (310, 232672), (320, 225401), (341, 211520), (352, 204910), (440, 163928), (496, 145420), (620, 116336), (661, 109120), (682, 105760), (704, 102455), (880, 81964), (992, 72710), (1240, 58168), (1322, 54560), (1364, 52880), (1705, 42304), (1760, 40982), (1984, 36355), (2480, 29084), (2644, 27280), (2728, 26440), (3305, 21824), (3410, 21152), (3520, 20491), (4960, 14542), (5288, 13640), (5456, 13220), (6610, 10912), (6820, 10576), (7271, 9920)]