201977720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:517

約数の個数: 128

約数和(自身を含む): 550195200

約数和(自身を除く): 348217480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 79, 92, 115, 140, 158, 161, 184, 230, 280, 316, 322, 395, 397, 460, 553, 632, 644, 790, 794, 805, 920, 1106, 1288, 1580, 1588, 1610, 1817, 1985, 2212, 2765, 2779, 3160, 3176, 3220, 3634, 3970, 4424, 5530, 5558, 6440, 7268, 7940, 9085, 9131, 11060, 11116, 12719, 13895, 14536, 15880, 18170, 18262, 22120, 22232, 25438, 27790, 31363, 36340, 36524, 45655, 50876, 55580, 62726, 63595, 63917, 72680, 73048, 91310, 101752, 111160, 125452, 127190, 127834, 156815, 182620, 219541, 250904, 254380, 255668, 313630, 319585, 365240, 439082, 508760, 511336, 627260, 639170, 721349, 878164, 1097705, 1254520, 1278340, 1442698, 1756328, 2195410, 2556680, 2885396, 3606745, 4390820, 5049443, 5770792, 7213490, 8781640, 10098886, 14426980, 20197772, 25247215, 28853960, 40395544, 50494430, 100988860, 201977720]

約数ペア:

[(1, 201977720), (2, 100988860), (4, 50494430), (5, 40395544), (7, 28853960), (8, 25247215), (10, 20197772), (14, 14426980), (20, 10098886), (23, 8781640), (28, 7213490), (35, 5770792), (40, 5049443), (46, 4390820), (56, 3606745), (70, 2885396), (79, 2556680), (92, 2195410), (115, 1756328), (140, 1442698), (158, 1278340), (161, 1254520), (184, 1097705), (230, 878164), (280, 721349), (316, 639170), (322, 627260), (395, 511336), (397, 508760), (460, 439082), (553, 365240), (632, 319585), (644, 313630), (790, 255668), (794, 254380), (805, 250904), (920, 219541), (1106, 182620), (1288, 156815), (1580, 127834), (1588, 127190), (1610, 125452), (1817, 111160), (1985, 101752), (2212, 91310), (2765, 73048), (2779, 72680), (3160, 63917), (3176, 63595), (3220, 62726), (3634, 55580), (3970, 50876), (4424, 45655), (5530, 36524), (5558, 36340), (6440, 31363), (7268, 27790), (7940, 25438), (9085, 22232), (9131, 22120), (11060, 18262), (11116, 18170), (12719, 15880), (13895, 14536)]