201520601980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1\times {\mathrm{10067}}^1$

素因数の和:10579

約数の個数: 96

約数和(自身を含む): 443288401920

約数和(自身を除く): 241767799940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 389, 415, 620, 778, 830, 1556, 1660, 1945, 2573, 3890, 5146, 7780, 10067, 10292, 12059, 12865, 20134, 24118, 25730, 32287, 40268, 48236, 50335, 51460, 60295, 64574, 100670, 120590, 129148, 161435, 201340, 241180, 312077, 322870, 624154, 645740, 835561, 1000897, 1248308, 1560385, 1671122, 2001794, 3120770, 3342244, 3916063, 4003588, 4177805, 5004485, 6241540, 7832126, 8355610, 10008970, 15664252, 16711220, 19580315, 20017940, 25902391, 39160630, 51804782, 78321260, 103609564, 121397953, 129511955, 242795906, 259023910, 325033229, 485591812, 518047820, 606989765, 650066458, 1213979530, 1300132916, 1625166145, 2427959060, 3250332290, 6500664580, 10076030099, 20152060198, 40304120396, 50380150495, 100760300990, 201520601980]

約数ペア:

[(1, 201520601980), (2, 100760300990), (4, 50380150495), (5, 40304120396), (10, 20152060198), (20, 10076030099), (31, 6500664580), (62, 3250332290), (83, 2427959060), (124, 1625166145), (155, 1300132916), (166, 1213979530), (310, 650066458), (332, 606989765), (389, 518047820), (415, 485591812), (620, 325033229), (778, 259023910), (830, 242795906), (1556, 129511955), (1660, 121397953), (1945, 103609564), (2573, 78321260), (3890, 51804782), (5146, 39160630), (7780, 25902391), (10067, 20017940), (10292, 19580315), (12059, 16711220), (12865, 15664252), (20134, 10008970), (24118, 8355610), (25730, 7832126), (32287, 6241540), (40268, 5004485), (48236, 4177805), (50335, 4003588), (51460, 3916063), (60295, 3342244), (64574, 3120770), (100670, 2001794), (120590, 1671122), (129148, 1560385), (161435, 1248308), (201340, 1000897), (241180, 835561), (312077, 645740), (322870, 624154)]