20860020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{401}}^1$

素因数の和:450

約数の個数: 108

約数和(自身を含む): 67384044

約数和(自身を除く): 46524024

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 289, 306, 340, 401, 510, 578, 612, 765, 802, 867, 1020, 1156, 1203, 1445, 1530, 1604, 1734, 2005, 2406, 2601, 2890, 3060, 3468, 3609, 4010, 4335, 4812, 5202, 5780, 6015, 6817, 7218, 8020, 8670, 10404, 12030, 13005, 13634, 14436, 17340, 18045, 20451, 24060, 26010, 27268, 34085, 36090, 40902, 52020, 61353, 68170, 72180, 81804, 102255, 115889, 122706, 136340, 204510, 231778, 245412, 306765, 347667, 409020, 463556, 579445, 613530, 695334, 1043001, 1158890, 1227060, 1390668, 1738335, 2086002, 2317780, 3476670, 4172004, 5215005, 6953340, 10430010, 20860020]

約数ペア:

[(1, 20860020), (2, 10430010), (3, 6953340), (4, 5215005), (5, 4172004), (6, 3476670), (9, 2317780), (10, 2086002), (12, 1738335), (15, 1390668), (17, 1227060), (18, 1158890), (20, 1043001), (30, 695334), (34, 613530), (36, 579445), (45, 463556), (51, 409020), (60, 347667), (68, 306765), (85, 245412), (90, 231778), (102, 204510), (153, 136340), (170, 122706), (180, 115889), (204, 102255), (255, 81804), (289, 72180), (306, 68170), (340, 61353), (401, 52020), (510, 40902), (578, 36090), (612, 34085), (765, 27268), (802, 26010), (867, 24060), (1020, 20451), (1156, 18045), (1203, 17340), (1445, 14436), (1530, 13634), (1604, 13005), (1734, 12030), (2005, 10404), (2406, 8670), (2601, 8020), (2890, 7218), (3060, 6817), (3468, 6015), (3609, 5780), (4010, 5202), (4335, 4812)]