20870460

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1025

約数の個数: 120

約数和(自身を含む): 70578816

約数和(自身を除く): 49708356

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 260, 270, 324, 351, 390, 405, 468, 540, 585, 702, 780, 810, 991, 1053, 1170, 1404, 1620, 1755, 1982, 2106, 2340, 2973, 3510, 3964, 4212, 4955, 5265, 5946, 7020, 8919, 9910, 10530, 11892, 12883, 14865, 17838, 19820, 21060, 25766, 26757, 29730, 35676, 38649, 44595, 51532, 53514, 59460, 64415, 77298, 80271, 89190, 107028, 115947, 128830, 133785, 154596, 160542, 178380, 193245, 231894, 257660, 267570, 321084, 347841, 386490, 401355, 463788, 535140, 579735, 695682, 772980, 802710, 1043523, 1159470, 1391364, 1605420, 1739205, 2087046, 2318940, 3478410, 4174092, 5217615, 6956820, 10435230, 20870460]

約数ペア:

[(1, 20870460), (2, 10435230), (3, 6956820), (4, 5217615), (5, 4174092), (6, 3478410), (9, 2318940), (10, 2087046), (12, 1739205), (13, 1605420), (15, 1391364), (18, 1159470), (20, 1043523), (26, 802710), (27, 772980), (30, 695682), (36, 579735), (39, 535140), (45, 463788), (52, 401355), (54, 386490), (60, 347841), (65, 321084), (78, 267570), (81, 257660), (90, 231894), (108, 193245), (117, 178380), (130, 160542), (135, 154596), (156, 133785), (162, 128830), (180, 115947), (195, 107028), (234, 89190), (260, 80271), (270, 77298), (324, 64415), (351, 59460), (390, 53514), (405, 51532), (468, 44595), (540, 38649), (585, 35676), (702, 29730), (780, 26757), (810, 25766), (991, 21060), (1053, 19820), (1170, 17838), (1404, 14865), (1620, 12883), (1755, 11892), (1982, 10530), (2106, 9910), (2340, 8919), (2973, 7020), (3510, 5946), (3964, 5265), (4212, 4955)]