28204020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{709}}^1$

素因数の和:754

約数の個数: 144

約数和(自身を含む): 97690320

約数和(自身を除く): 69486300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 30, 34, 36, 39, 45, 51, 52, 60, 65, 68, 78, 85, 90, 102, 117, 130, 153, 156, 170, 180, 195, 204, 221, 234, 255, 260, 306, 340, 390, 442, 468, 510, 585, 612, 663, 709, 765, 780, 884, 1020, 1105, 1170, 1326, 1418, 1530, 1989, 2127, 2210, 2340, 2652, 2836, 3060, 3315, 3545, 3978, 4254, 4420, 6381, 6630, 7090, 7956, 8508, 9217, 9945, 10635, 12053, 12762, 13260, 14180, 18434, 19890, 21270, 24106, 25524, 27651, 31905, 36159, 36868, 39780, 42540, 46085, 48212, 55302, 60265, 63810, 72318, 82953, 92170, 108477, 110604, 120530, 127620, 138255, 144636, 156689, 165906, 180795, 184340, 216954, 241060, 276510, 313378, 331812, 361590, 414765, 433908, 470067, 542385, 553020, 626756, 723180, 783445, 829530, 940134, 1084770, 1410201, 1566890, 1659060, 1880268, 2169540, 2350335, 2820402, 3133780, 4700670, 5640804, 7051005, 9401340, 14102010, 28204020]

約数ペア:

[(1, 28204020), (2, 14102010), (3, 9401340), (4, 7051005), (5, 5640804), (6, 4700670), (9, 3133780), (10, 2820402), (12, 2350335), (13, 2169540), (15, 1880268), (17, 1659060), (18, 1566890), (20, 1410201), (26, 1084770), (30, 940134), (34, 829530), (36, 783445), (39, 723180), (45, 626756), (51, 553020), (52, 542385), (60, 470067), (65, 433908), (68, 414765), (78, 361590), (85, 331812), (90, 313378), (102, 276510), (117, 241060), (130, 216954), (153, 184340), (156, 180795), (170, 165906), (180, 156689), (195, 144636), (204, 138255), (221, 127620), (234, 120530), (255, 110604), (260, 108477), (306, 92170), (340, 82953), (390, 72318), (442, 63810), (468, 60265), (510, 55302), (585, 48212), (612, 46085), (663, 42540), (709, 39780), (765, 36868), (780, 36159), (884, 31905), (1020, 27651), (1105, 25524), (1170, 24106), (1326, 21270), (1418, 19890), (1530, 18434), (1989, 14180), (2127, 13260), (2210, 12762), (2340, 12053), (2652, 10635), (2836, 9945), (3060, 9217), (3315, 8508), (3545, 7956), (3978, 7090), (4254, 6630), (4420, 6381)]