205340980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:449

約数の個数: 96

約数和(自身を含む): 493637760

約数和(自身を除く): 288296780

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 197, 211, 247, 260, 380, 394, 422, 494, 788, 844, 985, 988, 1055, 1235, 1970, 2110, 2470, 2561, 2743, 3743, 3940, 4009, 4220, 4940, 5122, 5486, 7486, 8018, 10244, 10972, 12805, 13715, 14972, 16036, 18715, 20045, 25610, 27430, 37430, 40090, 41567, 48659, 51220, 52117, 54860, 74860, 80180, 83134, 97318, 104234, 166268, 194636, 207835, 208468, 243295, 260585, 415670, 486590, 521170, 540371, 789773, 831340, 973180, 1042340, 1080742, 1579546, 2161484, 2701855, 3159092, 3948865, 5403710, 7897730, 10267049, 10807420, 15795460, 20534098, 41068196, 51335245, 102670490, 205340980]

約数ペア:

[(1, 205340980), (2, 102670490), (4, 51335245), (5, 41068196), (10, 20534098), (13, 15795460), (19, 10807420), (20, 10267049), (26, 7897730), (38, 5403710), (52, 3948865), (65, 3159092), (76, 2701855), (95, 2161484), (130, 1579546), (190, 1080742), (197, 1042340), (211, 973180), (247, 831340), (260, 789773), (380, 540371), (394, 521170), (422, 486590), (494, 415670), (788, 260585), (844, 243295), (985, 208468), (988, 207835), (1055, 194636), (1235, 166268), (1970, 104234), (2110, 97318), (2470, 83134), (2561, 80180), (2743, 74860), (3743, 54860), (3940, 52117), (4009, 51220), (4220, 48659), (4940, 41567), (5122, 40090), (5486, 37430), (7486, 27430), (8018, 25610), (10244, 20045), (10972, 18715), (12805, 16036), (13715, 14972)]