20521140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:461

約数の個数: 96

約数和(自身を含む): 61931520

約数和(自身を除く): 41410380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 47, 57, 60, 76, 94, 95, 114, 141, 188, 190, 228, 235, 282, 285, 380, 383, 470, 564, 570, 705, 766, 893, 940, 1140, 1149, 1410, 1532, 1786, 1915, 2298, 2679, 2820, 3572, 3830, 4465, 4596, 5358, 5745, 7277, 7660, 8930, 10716, 11490, 13395, 14554, 17860, 18001, 21831, 22980, 26790, 29108, 36002, 36385, 43662, 53580, 54003, 72004, 72770, 87324, 90005, 108006, 109155, 145540, 180010, 216012, 218310, 270015, 342019, 360020, 436620, 540030, 684038, 1026057, 1080060, 1368076, 1710095, 2052114, 3420190, 4104228, 5130285, 6840380, 10260570, 20521140]

約数ペア:

[(1, 20521140), (2, 10260570), (3, 6840380), (4, 5130285), (5, 4104228), (6, 3420190), (10, 2052114), (12, 1710095), (15, 1368076), (19, 1080060), (20, 1026057), (30, 684038), (38, 540030), (47, 436620), (57, 360020), (60, 342019), (76, 270015), (94, 218310), (95, 216012), (114, 180010), (141, 145540), (188, 109155), (190, 108006), (228, 90005), (235, 87324), (282, 72770), (285, 72004), (380, 54003), (383, 53580), (470, 43662), (564, 36385), (570, 36002), (705, 29108), (766, 26790), (893, 22980), (940, 21831), (1140, 18001), (1149, 17860), (1410, 14554), (1532, 13395), (1786, 11490), (1915, 10716), (2298, 8930), (2679, 7660), (2820, 7277), (3572, 5745), (3830, 5358), (4465, 4596)]