20380920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1277}}^1$

素因数の和:1317

約数の個数: 128

約数和(自身を含む): 73612800

約数和(自身を除く): 53231880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1277, 1330, 1596, 1995, 2280, 2554, 2660, 3192, 3831, 3990, 5108, 5320, 6385, 7662, 7980, 8939, 10216, 12770, 15324, 15960, 17878, 19155, 24263, 25540, 26817, 30648, 35756, 38310, 44695, 48526, 51080, 53634, 71512, 72789, 76620, 89390, 97052, 107268, 121315, 134085, 145578, 153240, 169841, 178780, 194104, 214536, 242630, 268170, 291156, 339682, 357560, 363945, 485260, 509523, 536340, 582312, 679364, 727890, 849205, 970520, 1019046, 1072680, 1358728, 1455780, 1698410, 2038092, 2547615, 2911560, 3396820, 4076184, 5095230, 6793640, 10190460, 20380920]

約数ペア:

[(1, 20380920), (2, 10190460), (3, 6793640), (4, 5095230), (5, 4076184), (6, 3396820), (7, 2911560), (8, 2547615), (10, 2038092), (12, 1698410), (14, 1455780), (15, 1358728), (19, 1072680), (20, 1019046), (21, 970520), (24, 849205), (28, 727890), (30, 679364), (35, 582312), (38, 536340), (40, 509523), (42, 485260), (56, 363945), (57, 357560), (60, 339682), (70, 291156), (76, 268170), (84, 242630), (95, 214536), (105, 194104), (114, 178780), (120, 169841), (133, 153240), (140, 145578), (152, 134085), (168, 121315), (190, 107268), (210, 97052), (228, 89390), (266, 76620), (280, 72789), (285, 71512), (380, 53634), (399, 51080), (420, 48526), (456, 44695), (532, 38310), (570, 35756), (665, 30648), (760, 26817), (798, 25540), (840, 24263), (1064, 19155), (1140, 17878), (1277, 15960), (1330, 15324), (1596, 12770), (1995, 10216), (2280, 8939), (2554, 7980), (2660, 7662), (3192, 6385), (3831, 5320), (3990, 5108)]